general relativity

2 articles · All tags

• Gravitational Waves: Ripples in Spacetime Explained
  Gravitational waves are ripples in spacetime from accelerating masses. LIGO first detected them in 2015 from two merging black holes 1.3 billion light-years away.
• Black Holes
  Regions of spacetime where gravity is so strong that nothing, not even light, can escape from inside the event horizon.